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Finding the Fourth Proportional to 340,324.26, 510,486.36 and 90,999.78

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Solution

The fourth proportional to 340,324.26, 510,486.36 and 90,999.78 is: 136,499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,324.26 : 510,486.36 = 90,999.78 : x
  2. Step 2: Convert to fraction form
    340,324.26/510,486.36 = 90,999.78/x
  3. Step 3: Cross multiply
    340,324.26x = 510,486.36 × 90,999.78
  4. Step 4: Simplify right side
    340,324.26x = 46,454,146,453.00
  5. Step 5: Solve for x
    x = 46,454,146,453.00/340,324.26
  6. Step 6: Final answer
    x = 136,499.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.